Paper-board box.



G. B. STREIT. FAPER BOARD BOX. APYLIUATION NLED Nov. r1, 1914.

. Llgggio Patented Jan. 26, 19M.

EGEL

Specification oi Leliers iateziu.

To all fui/m it may concern Be it known thai: l, GEORGE B. Swen?, a eiiizeii of the United States, residing at Eetioit, county of lziyne, State of Michigan,

5 have invented certain new and useful lmprovement in Paper-Board Boxes, enel deelare -the following to be :L full, Clear, and exact description of he same, such as will enable others skilled in the art to WhiolY il: pertains. to melee :incl use the seme, relierenrse being hed to the accompanying drawings, which forro a part 0 1?" ihis specification.

This inveiiion relates to paper board boxes of the type shown in patent. to R. P. Brown 525,585. @ne of the di'iie'ulties with thetype of box shown in the Brown patentis to get the flaps under the `lips that are struck vout of the bottom; especially is this true with the box merle out of heavy hoard. l; has been proposecl ite ohvielte this olojer:- :ion byscoring the flap een be boelileil in forcing it under the lip. Patent 698.117 to Jordan shows this improvement,

l: is the object of the present invention eo olivi-ate the difficulty in another Way and in a Way which in no Way impairs the engagemenh of the liep with the lip.

fin the drawings, Figure 'l is a perspective of the box4 folded for usage. Fig'. is e fletail showing the liep before it is slipped 'amder the lip. Fig. 3 is e fragmentary section showing how with lheiise of-the'lntch it 'is easier to gel. the flap under the lip. Fig. 4t.

shows how the spring acioii of the folclefl end Well liolrls the latch iiiiler `'che lip.

The -vpeo hox sliowii in the dre'vinn is Well known in the-fire, eo it will he minecessnry to refer to the imm hlenlr and the specific portions iliat .ma io iiizrle up die sicle Walls. hotom ete. lie-ference to the patent to Brown will show the eral form of Consriiction. The side walls are locked in perpehclieulur posiition with respeci to the bottom b v the end Walls a, a. which double-back Upon themselves :incl "he extensions no of lie ."oe Walls in 'n the Eelde-rl portions nl: :lie end Walls hess double end Willis are each proviclei "nih a, terminal 'flap f:- Wliieh is iiitended io engage Under the lip o? that cut in lie bottom of he hols.

rdiiia, ijf it would he there would he no difficulty in swinging li flap e and he lip a? upwar-fly to e point ee- 55 yon where their swinging' arcs iiierseel: so

ipposed thm;

limiti, fl, il?

there hofe liep c ezio, fllop under the lip cl. l'lowever, in order to provide the lip wel; siiflieieiit silliness to eecoiriplish. iis function ,of holding the flap o irA place, il; is necessary the?, this lip f: have :i very Wiie 6G bese. Consequeely this lip swings with a greaedeal off clillioiilty, and ii? iii is swung too for, the peper board will teer. therefore, iieoesszirv io so errang@ the lip gl :incl the flap c ihm; the lip will, noli here so be reiseil any more than isabsolutely necessary. if the paper board out oi which the paper bex is matie nel, very thick, itlie dii@- 'fieiily is not so greet es the boarcl fiexes easier without tearing. lliheiie the paper 7i) boord is quite thick emi si, great dilieulty will be found in forcing the flap funder the lip, and iii fact @o make it possible *zo cure the under loe lip without tearing ilie hoerel, itis necessary io move the lips 7- ar-her away from lhe enel wells than is the case in he consti-doti on shown in my draw ings. The farther away the lip is from the perpendicular posiiion olf the end Well, the Smaller will the are be through which the lip must be swung to allow the flap to drop ,under the lip. However, the moving of ellis lip farther into the box 'results iii. the innei` strip g of the end Well i spreading farther from the outer well i 1mg. el). ln fact, ie 2.5 will spread so far that lie imier 'fece oit the end Wall a, will Geese in he ezpeiifliouliu but rather will oeineliieil. which is. clearlyv :i derimeiit to fixe hex for the iixlerior ei he will have diiereiilfliiperi oiif iai; the top .if iisirnivs the iz'imre my iii1- giz'evei'neiii.. ll; comprises cuts forming latch or tongue. e in the end me the fla o hf; means of the curvilinear converging "These present a narrow bese ior 'ehe io or latch mid consequently this meip Y A easily1v swing. A gain rel'err Sgo is 3, il, will 'be seen that Llie inner will wel] n is pushed ii 'hilly ag wall ,7L :it the ho'itom. latch 0 somoivliiil; Wise he :in zalm-3st com dition wil'i i'eroeel' quently ii the letvl Mii) encounteredz-rsn the entire flap c must ne' swung in order to get it under the lip d, ano\ .insinueh as it has a very long base, this swinging is rather dil'ticnlt especially where the :diaper board is thick; second, the. lip (l beingin the saine position` this member CZ innst he swung' back quite a little farther t'or the flap than is required for the latch This is clearly shown by the arcs described in Fig. 3. The arc alpha is the a re described by the flap in swinging while the a rc beta is the arc deseribed by the latch e in sn'ingii'ig. .It is apparent that the lip d will have to be bent bark considerably farther in order to allow the ii1ie|it.iap i' to pass under 'it than it will to allow the latch r to pass under it. when the `latch f: has been ont in the ilap. lt is in this my inni'roveinent lies, for inasmuch as the lip d has of necessity a very broad base and is still', it cannot stand too much bending back especially in heavy board boxes, without, tearing. 0r it the position kof the lip d is moved fartherinward in the box to lessen the length ot' the arc through which it will have to be swung, then when the inner wall 7 resumes the position it will t'ake by reason of the spring action of the folded end wall as. such a position will'nol be a. true vertical position as shown in Fig. 4, or approximately one, but. rather an inelined position, thereby making the. interior dimensions of thebox different at top and bottom.

It will be found that the parts may be easily engaged by pressing the thumb against the inside strip g/ and forcing it against the outer strip L as shown in F ig. 3, and then using two fingers to pry the lip d and the latehe upward until their arcs intersect and the latch e drops under the lip d. This pressing should be done from the bottoni ot' the box.

What I claim is:

.il box, comprising av bottoni, a pair of side walls having extensions. a folded end wall comprising two strips that fold against each other to lock the extensions of the side walls in place, and a tern'iinal flap, said terminal lla p including' a latch having a hinging axis between the free edge ot' the terminal Hap and the hinging axis of thel terminal flap and the said bottom oi' the box being provided with a lip cut in it under which the llap engages by the latch and lip being raised to allow the latch to drop under the lip` substantially as described.

In testimony whereof, I sign this specification in the presence of two witnesses.

GEORGE B. STREIT.

Vtlitnesses STUART C. Baluma VnzoINlA C. SPRATT. 

